{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:XCBKOE2MCRQ7MLHDW4QLHMLOWL","short_pith_number":"pith:XCBKOE2M","schema_version":"1.0","canonical_sha256":"b882a7134c1461f62ce3b720b3b16eb2e50354ea927d38e0303ed9f3e863ab40","source":{"kind":"arxiv","id":"1509.08964","version":1},"attestation_state":"computed","paper":{"title":"Reconstructing the galaxy density field with photometric redshifts: I. Methodology and validation on stellar mass functions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Andrea Cimatti, Lucia Pozzetti, Nicola Malavasi, Olga Cucciati, Sandro Bardelli","submitted_at":"2015-09-29T22:01:28Z","abstract_excerpt":"Measuring environment for large numbers of distant galaxies is still an open problem, for which we need galaxy positions and redshifts. Photometric redshifts are more easily available for large numbers of galaxies, but at the price of larger uncertainties than spectroscopic ones. In this work we study how photometric redshifts affect the measurement of galaxy environment and how this may limit an analysis of the galaxy stellar mass function (GSMF) in different environments. Using mock galaxy catalogues, we measured the environment with a fixed aperture method, using each galaxy's true and phot"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1509.08964","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-09-29T22:01:28Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"4c3dcc829d8a903822d4eda6997b074b214cc08867bbc2f41d7de0647f4b0073","abstract_canon_sha256":"15242c2c6fd3e2dc6d7e1c8924481f25516277aed37ec1ac29fd22653a525b5e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:23:23.116258Z","signature_b64":"87038nbep+evwfB2FKAQOfRcyyAOlov5dO8svOE2ZMoSyFOiK+/Douq3ZFru0+XbzfuTBklHMlyNG8qLJjN+DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b882a7134c1461f62ce3b720b3b16eb2e50354ea927d38e0303ed9f3e863ab40","last_reissued_at":"2026-05-18T01:23:23.115665Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:23:23.115665Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Reconstructing the galaxy density field with photometric redshifts: I. Methodology and validation on stellar mass functions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Andrea Cimatti, Lucia Pozzetti, Nicola Malavasi, Olga Cucciati, Sandro Bardelli","submitted_at":"2015-09-29T22:01:28Z","abstract_excerpt":"Measuring environment for large numbers of distant galaxies is still an open problem, for which we need galaxy positions and redshifts. Photometric redshifts are more easily available for large numbers of galaxies, but at the price of larger uncertainties than spectroscopic ones. In this work we study how photometric redshifts affect the measurement of galaxy environment and how this may limit an analysis of the galaxy stellar mass function (GSMF) in different environments. Using mock galaxy catalogues, we measured the environment with a fixed aperture method, using each galaxy's true and phot"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.08964","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1509.08964","created_at":"2026-05-18T01:23:23.115751+00:00"},{"alias_kind":"arxiv_version","alias_value":"1509.08964v1","created_at":"2026-05-18T01:23:23.115751+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.08964","created_at":"2026-05-18T01:23:23.115751+00:00"},{"alias_kind":"pith_short_12","alias_value":"XCBKOE2MCRQ7","created_at":"2026-05-18T12:29:50.041715+00:00"},{"alias_kind":"pith_short_16","alias_value":"XCBKOE2MCRQ7MLHD","created_at":"2026-05-18T12:29:50.041715+00:00"},{"alias_kind":"pith_short_8","alias_value":"XCBKOE2M","created_at":"2026-05-18T12:29:50.041715+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/XCBKOE2MCRQ7MLHDW4QLHMLOWL","json":"https://pith.science/pith/XCBKOE2MCRQ7MLHDW4QLHMLOWL.json","graph_json":"https://pith.science/api/pith-number/XCBKOE2MCRQ7MLHDW4QLHMLOWL/graph.json","events_json":"https://pith.science/api/pith-number/XCBKOE2MCRQ7MLHDW4QLHMLOWL/events.json","paper":"https://pith.science/paper/XCBKOE2M"},"agent_actions":{"view_html":"https://pith.science/pith/XCBKOE2MCRQ7MLHDW4QLHMLOWL","download_json":"https://pith.science/pith/XCBKOE2MCRQ7MLHDW4QLHMLOWL.json","view_paper":"https://pith.science/paper/XCBKOE2M","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1509.08964&json=true","fetch_graph":"https://pith.science/api/pith-number/XCBKOE2MCRQ7MLHDW4QLHMLOWL/graph.json","fetch_events":"https://pith.science/api/pith-number/XCBKOE2MCRQ7MLHDW4QLHMLOWL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XCBKOE2MCRQ7MLHDW4QLHMLOWL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XCBKOE2MCRQ7MLHDW4QLHMLOWL/action/storage_attestation","attest_author":"https://pith.science/pith/XCBKOE2MCRQ7MLHDW4QLHMLOWL/action/author_attestation","sign_citation":"https://pith.science/pith/XCBKOE2MCRQ7MLHDW4QLHMLOWL/action/citation_signature","submit_replication":"https://pith.science/pith/XCBKOE2MCRQ7MLHDW4QLHMLOWL/action/replication_record"}},"created_at":"2026-05-18T01:23:23.115751+00:00","updated_at":"2026-05-18T01:23:23.115751+00:00"}